Rotary engine.



No. 711,600. v Patented 0st. 2|, |902. I M. W. WALLACE.

RDTARY ENGINE.

\App1ication led Feb, 24, 1902.) l

(No Model.) 3 Sheets-Sheet l.

' ATTORNEYS No. 7||,6oo. Patented ont. 2|, |902.

I M. w. WALLACE.

ROTARY ENGINE.

@pplicaton filed Feb. 24, 1902.)

(No Model.) 3 Sheets-Sheet 2.

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3 Sheets-Sheet 3.

Patented Oct. y2|, |902.

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R0 ENGINE.

on ed Feb. 24, 19

No. 7||,6no.

(No Model.)

W/ TNE SSE S UNITED STATES PATENT OEEICE.

MICHAEL WALTER WALLACE, OF EVELETH, MINNESOTA.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 711,600, dated October2l, 1902.

l Application filed February Z4, 1902. Serial No. 95,269. (No model.)

To @ZZ whom it mag/concern;

Be it known that I, MIGHAELWALTER WAL- LACE, a citizen of theUnitedStates, and a motive agent to the fullest advantage.

The invention consistsofnovel features and parts and combinations of thesame, as

will be more fully described hereinafter and then pointed out intheclaims.

A practical embodiment of the invention is.

represented in the accompanying drawings,

responding parts in all the views.

Figure l is a face view of the improvement,A

one of the cylinder-heads beingremoved and parts being shown in section.tional elevation of the same on the line 2 2 of Fig. 1. Fig. 3 is aninner face view of one of the cylinder-heads. Fig. L is a face view ofthe inner side of one yof the outer sections of the wheel. Fig. 5 is aface view of the central section of the wheel. Fig. 6 is au edge view ofthe same. Fig. 7 is a sectional plan View of the improvement on theline-,7 7 of Fig. 1, and Fig. Sis a similar view of the same on the line8 8 of Fig. l.

The cylinder A of thev engine is provided with the cylinder-heads A A2,connected' by supply-pipes B B with a steam-boiler or other source ofmotive-agent supply, Vand in the said cylinder is mounted to rotate awheeLconsisting of a central section() and outer or'side sections D D',separated from the central section C by disks E E', as plaiulyindicatedin Figs. 2 and S.

The wheel is secured by its outer sections` D D to the mainshaft F,jonrnaled in suit-- able bearings G, carried by the cylinder-heads A A2,and the said shaft F is preferably made hollow to serve as an exhaustfor the motive agent, as hereinafter more fully described.

The cylinder-heads A and A2 are alike in construction and are formed ontheir inner Fig. 2 is a secfaces with feed-grooves a 0], connecting atone end with the supply-pipes B B and opening Vat their other ends intoports b b', (see Fig. 7 leading to feed-grooves c c', formed ontheinside of the cylinder-rim and arranged face of the central section,the inner ends of both spiral grooves opening into an exhaustchamber C3,surrounding the middle portion of the shaft F, which is provided at thispoint with perforations F, opening into the eX- vhaust-chamber.

The feed-grooves a a in the cylinder-heads have a portion thereofsegmental, as indicated in Fig. 3, and this segmental portion registers`with the chambers D2, formed in the web of the outer sections D D',respectively, so that live steam can pass into the said chambers as thewheel rotates. The 4chambers D2 connect at the inner faces of thesections D D with spiral grooves D3, leading at their inner ends to theopenings inthe disks E E to connect with the eXhaust-chamberOb, formedannularly around the middle portion of the shaft F, by thecentralsection C.

In order to preventleakage of steam be- 1 tween the wheel'and the rim ofthe cylinder,

into the sets of buckets C and then into the spiral groove O2 to give animpulse to the central section to rotate the wheel. At the-same time thesteam passing into the chambers D2 to the spiral groove D3 gives impulsetothe outer sections D D" of the wheel, so that the latter is rotatedwith the full force of the IOO steam, the steam finally passing from theseveral spiral grooves to the exhaust-chamber C3 and then through theperforations F into the main shaft F, to be conducted to a condenser orto other machines to be driven by the eX- haust-steam.

It will be seen that by the arrangement described the steam acts both onthe central and outer sections of the Wheel and Works eXpansivelythereon, so that the motive agent is utilized to the fullest advantage.

It is understood that as the motive agent first acts on the sections ofthe wheel C at or near the outer ends thereof the greatest leverage isobtained, the latterdecreasing as the steam travels along the spiralgrooves to the exhaust chamber, and the pressure of the steam diminishescorrespondingly.

Having thus described my invention, I claim as new and desire to secureby Letters Patentl. A rotary engine comprising a cylinder, a Wheelmounted to rotate therein and having a plurality of sections formed withspiral grooves connecting at their outer ends with steam-feed grooves inthe said cylinder and its heads, and a main shaft mounted to turn andcarrying the said Wheel, the said shaft having perforations opening intoan exhaust-chamber arranged centrally in the Wheel, and into whichchamber the spiral grooves open, as set forth.

2. A rotary engine comprising a cylinder, a Wheel mounted to rotatetherein and having a plurality of sections formed with spiral groovesconnecting at their outer ends with steam-feed grooves in the saidcylinder and its heads, and a main shaft mounted to turn and carryingthe said Wheel, the said shaft being made hollow to form an exhaust forthe motive agent, the shaft receiving the exhaust from the inner ends ofthe spiral grooves, as set forth.

3. A rotary engine comprising a cylinder having feed-grooves on theinside of its rim and feed-grooves at the inner faces of thecylinder-heads, the cylinder-head feed-grooves being connected with themotive-agent supply and in communication with the said rim feed-grooves,a Wheel mounted to turn in the said cylinder, having a plurality ofsections formed with spiral grooves connecting at their outer ends withthe said steam-feed grooves in the cylinder and heads, and a main shaftmounted to turn and carrying the said Wheel, the said shaft havingperforations opening into an exhaust-chamber arranged centrally on thewheel, and into which chamber the spiral grooves open, as set forth.

4. A rotary engine comprising a cylinder having feed-grooves on theinside of its rim and feed-grooves at the inner faces of thecylinder-heads, the cylinder-head feed-grooves being connected with themotive-agent supply and in communication With the said rim feed-grooves,and a Wheel mounted to rotate in the said cylinder, having its centralsection formed with buckets and spiral grooves, the buckets openingintothe rim feed-grooves, the Wheel also having outer sections formed Withchambers and spiral feed-grooves, of which the chambers connect with thefeedgrooves in the cylinder-heads, as set forth.

5. A rotary engine comprising a cylinder having feed-grooves on theinside of its rim and feed-grooves at the inner faces of thecylinder-heads, the cylinder-head feed-grooves being connected With themotive-agent supply and in communication With the said rim feed-grooves,and a wheel mounted to rotate in the said cylinder, having its centralsection formed with buckets and spiral grooves, the buckets opening intothe rim feed-grooves, the Wheel also having outer sections formed withchambers and spiral feed-grooves, of which the chambers connect with thefeedgrooves in the cylinder-heads, the said Wheel also having a centralexhaust-chamber into which open the said spiral grooves, as set forth.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

MICHAEL WALTER WALLACE.

Witnesses:

JOHN JENNINGS, THOMAS GAILE.

